Which of the following characterizes a symbiotic relationship? A. a close interrelationship where both species benefit B. a close interrelationship where one species benefits and the other is not affected C. a close interrelationship where one species benefits and the other is adversely affected D. an intimate relationship between members of two or more species E. All of these choices are correct

All of these choices are correct. (E)

Explanation:

A symbiotic relationship is defined as the close interrelationship between two or more species. This relationship is important for ecosystems and, many organisms and provides balance to the environment.

There are 3 types of symbiotic relationship:

1) Mutualism: In this relationship both get benefits.

2) Parasitism: In this relationship, one species gains and other species suffer.

3) Commensalism: In this relationship one species benefits, and the other is not affected.

unicellular organisms, like bacteria, are able to perform all life functions within one single cell. multicellular organisms need many different types of cells to carry out the same life processes. each of these special types of cells has a different structure that it perform a specific function.

i think its white blood cells

i hope this